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Offline Paecific  
#1 Posted : 25 October 2021 19:34:04(UTC)
Paecific

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Trying to plot a variety of functions and nothing shows up in the plots.
I have 23 yrs of MathCad experience, but cannot figure out what Smath is looking for to plot three very simple function (See attached file).
Additionally, I am not sure why an equation needs vectorized to output the answers in the normal distribution equation.

Equation 1 - Normal distribution does not solve as a function until it is vectorized. Why?
Equation 2 - f(x):x^3+2*x*sin(0.25) solves without vectorization but will not plot. Why?
Equation 3 - f(x):vectorize(1/{σ*sqrt(2*π)}*e^{-1/2*({x-μ}/σ)^2}) solves with vectorization but does not plot (2D or X-Y plot method). Why?


Smath - 2D Plots.sm (16kb) downloaded 10 time(s).
Offline Paecific  
#2 Posted : 25 October 2021 19:54:36(UTC)
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Equation 2 also needs vectorized to get the correct results.
You don't have to do this in MathCad, why here?
Offline PompelmoTell  
#3 Posted : 25 October 2021 20:35:07(UTC)
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You have defined a vector of values ​​for x. If you use the X-YPLOT plugin you need to change the variable. If instead you use SM native 2D graph then it already works as you expect
Solver_ZlzWlOSv41.png
sergio
Offline Paecific  
#4 Posted : 25 October 2021 20:42:14(UTC)
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First Solution Found
This allowed me to plot Normal Distribution Function.
augment(x,f(x))
Offline Paecific  
#5 Posted : 25 October 2021 21:13:13(UTC)
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Solved for now. On with the learning experience.
Thanks....
Offline Renzorex  
#6 Posted : 25 October 2021 21:13:44(UTC)
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Hi, if you need a quick plot I recommend you use 2D standard plot you can plot functions f(x) directly , if you need a more configurable plot use XY plot but you need to put your data in a special format. PlotXY.png Smath - 2D Plots.sm (20kb) downloaded 4 time(s).
Offline overlord  
#7 Posted : 25 October 2021 21:29:09(UTC)
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You don't need to use range() and augment() if you want to plot sections.
You can limit it with if-else() or cases().

Regards

plot.png

Edited by user 25 October 2021 21:31:01(UTC)  | Reason: Not specified

Offline Jean Giraud  
#8 Posted : 25 October 2021 21:43:24(UTC)
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Originally Posted by: Paecific Go to Quoted Post
Trying to plot a variety of functions and nothing shows up in the plots.
I have 23 yrs of MathCad experience, but cannot figure out what Smath is looking for to plot three very simple function (See attached file).
Additionally, I am not sure why an equation needs vectorized to output the answers in the normal distribution equation.

1. Show the two other ones on same document for doctoring.
2. Your sigma makes no sense !
3. BTW, in Samples you should find my Stat Treasury [10 WS]
Hard to find such immense Compendium.
4. If you can't download, please let me know
Welcome ... Jean.

Smath - 2D Plots.sm (18kb) downloaded 10 time(s).
Offline Jean Giraud  
#9 Posted : 25 October 2021 21:50:14(UTC)
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... besides the pure statistical application,
you can use to fit data sets [Fréchet US Rainfall ...]
Offline Jean Giraud  
#10 Posted : 25 October 2021 21:52:41(UTC)
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Originally Posted by: Jean Giraud Go to Quoted Post
... besides the pure statistical application,
you can use to fit data sets [Fréchet US Rainfall ...]

There is about 24 built-in PDF in Smath ... f(x) menu
as well as CDF, ICDF
Offline Jean Giraud  
#11 Posted : 26 October 2021 13:05:13(UTC)
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Originally Posted by: Paecific Go to Quoted Post
Equation 1 - Normal distribution does not solve as a function until it is vectorized. Why?

1. Discretize the range you want and plot ... No vectorize.
2. Plot scalar directly.

Normal.PNG
Offline Jean Giraud  
#12 Posted : 26 October 2021 13:29:00(UTC)
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Paecific.sm (10kb) downloaded 4 time(s).
Offline Jean Giraud  
#13 Posted : 26 October 2021 14:20:56(UTC)
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... in most applications inc(Low,High,step,f(#)) is preferred

Paecific.sm (15kb) downloaded 4 time(s).
Offline Jean Giraud  
#14 Posted : 26 October 2021 15:50:27(UTC)
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Scalar plots have limited use, mostly confirm the project.
Discrete plot can be used for subsequent application/export.
1. Collapsed the algo at top utilities.
2. Use it infinitely in-situ use [range each f(x) at will].

AlgoStyle.PNG
Offline overlord  
#15 Posted : 26 October 2021 17:29:10(UTC)
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Try this file.

Regards

Smath - 2D Plots_r1.sm (18kb) downloaded 13 time(s).

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